990726596 has 12 divisors (see below), whose sum is σ = 1749115452. Its totient is φ = 490979328.

The previous prime is 990726571. The next prime is 990726599. The reversal of 990726596 is 695627099.

It can be written as a sum of positive squares in 2 ways, for example, as 313998400 + 676728196 = 17720^2 + 26014^2 .

It is not an unprimeable number, because it can be changed into a prime (990726599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1095485 + ... + 1096388.

It is an arithmetic number, because the mean of its divisors is an integer number (145759621).

Almost surely, 2^990726596 is an apocalyptic number.

It is an amenable number.

990726596 is a deficient number, since it is larger than the sum of its proper divisors (758388856).

990726596 is a wasteful number, since it uses less digits than its factorization.

990726596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2191990 (or 2191988 counting only the distinct ones).

The product of its (nonzero) digits is 1837080, while the sum is 53.

The square root of 990726596 is about 31475.8096957012. The cubic root of 990726596 is about 996.8992606865.

The spelling of 990726596 in words is "nine hundred ninety million, seven hundred twenty-six thousand, five hundred ninety-six".